Crown Audio CE Series Front Panel Controls Indicators Power Switch, Reset Switch, Clip Indicators

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CE Series Power Amplifiers

3 Operation

3.3 Front Panel Controls and

Indicators

Power Switch

The power switch turns the amplifier on (“I”) or off (“O”).

Note that dangerous voltages may still be present in the amplifier even when the power switch is in the off (“O”) position. Before moving the amplifier or making any wiring or installation changes, it is important to also discon- nect the power cord from the amplifier or power source.

Reset Switch

The push-button reset switch is used to reset the circuit breaker that protects the power supply.

Fault Indicators

Two red LEDs (one for each channel) are located on the front panel. The Fault Indicators are normally OFF, but will blink under five different conditions:

1. When the amplifier is first powered up, until the unit is ready for operation.

2. If the heatsinks reach a temperature above normal working limits.

3. If the transformer thermal protection circuit is activated.

4. If the amplifier output wires develop a short-cir- cuit.

5. If the amplifier output stage stops operating.

The fault status of the amplifier can also be moni- tored remotely by attaching a signalling device to the Fault jack located on the amplifier back panel.

See Section 4.2.2 in this manual for more informa- tion on fault monitoring and suggestions for signal- ling device circuity.

Some fault conditions may cause the output of the amplifier to be muted.

Clip Indicators

These are two red LEDs (one per channel). The Clip Indicator turns on when distortion is audible in the amplifier output.

Signal Indicators

These are two green LEDs (one per channel). The Signal Indicator illuminates when a signal (> –40 dBm) is present at the INPUT of the amplifier for that channel. Because these indicators receive the signal before the level controls, they can be used to troubleshoot wiring problems within a system. If the Signal indicator for a channel is not lit, no signal is reaching the amplifier on that channel.

Power Indicator

The green Power indicator lights when your CE- Series amp has been turned on and has power.

Level Controls

Two rotary detented Level controls (one for each channel) are are used to adjust each channel’s out- put.

If you wish, the level control knobs may be pulled from the front panel and the holes plugged with the supplied caps to minimize tampering of control set- tings.

3.4Back Panel Controls and Connectors

Input Sensitivity Switch

This two-position Input Sensitivity switch is located near the input connectors. It lets you select between

1.4V input sensitivity or 26 dB gain. Please see Section 2.7 in this manual for details.

Mode Switch

This two-position switch selects either Stereo or Bridge-Mono mode of operation. Stereo mode pro- vides identical power output to each of the two amplifier output channels. Bridge-Mono mode combines the two amplifier output channels into a single mono channel with twice the voltage of a sin- gle stereo channel.

Do NOT select Bridge-Mono mode without first making sure the amplifier has been wired in a Bridge-Mono configuration. For more information on wiring for Bridge-Mono mode, see Section 2.6.2.

Fault Jack

This is an RJ-11 jack (which looks like a telephone jack). By attaching a signaling device to the Fault jack, you can monitor the amplifier’s Fault status from a remote location. See Section 4.2.2 for more information on fault monitoring.

Barrier Block Inputs

For each channel, this row of screw terminals pro- vides a balanced input, which is in parallel with the channel’s Combo input connector.

Neutrik Combo Input

One per channel, this combination 1/4-inch phone jack and XLR connector provides a balanced or unbalanced input.

Neutrik Speakon® Output

One per channel, this Neutrik Speakon® connector with four terminals connects to loudspeakers.

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Operation Manual

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Contents CE Series Some models may be exported under the name AmcronWatch for These Symbols Important Safety InstructionsCE Series amplifiers require Class 2 output wiring Use only with a cart, stand, bracket, or tableTCF Technical Certificate No C975CRI1.ABS Safety StandardCrown International, Inc Competent Body’s Name and AddressTable of Contents Welcome FeaturesHow to Use This Manual Accurate, undistorted soundYou may also stack amps without using a cabinet SetupUnpack Your Amplifier Install Your Amplifier Choose Input Wire and Connectors Balanced Input Connector WiringChoose Output Wire and Con- nectors Neutrik Speakon ConnectorSee the next page for Bridge-Mono wiring Wire Your System Stereo ModeHow to Parallel the Inputs Bridge-Mono Mode 11 Typical System Wiring, Bridge-Mono ModeStartup Procedure Input Sensitivity SwitchSensitivity Switch Precautions OperationControls, Indicators and Connectors Fault Indicators Front Panel Controls Indicators Power SwitchReset Switch Clip IndicatorsAdvanced Features Options SST-SBSC-3632T SST-SBSC 4632TFault Monitoring Location of Fault JackOptional 0.775 V Input Sensitivity Setting Options AccessoriesAlternate Output Connectors Tamper-Resistant Hole PlugsPower LED is driven from the low-voltage supply Principles of OperationCE Series Amplifier Block Troubleshooting Condition Power indicator is offSpecifications 120 VAC, 60 Hz Units, Bridge mono modeService Warranty Items Excluded from this CROWN- Warranty Worldwide Except USA & CanadaThis page intentionally left blank Crown Factory Service Information Nature of Problem

CE Series specifications

Crown Audio’s CE Series amplifiers are designed to deliver high performance and reliability for a variety of applications, including live sound, commercial installations, and houses of worship. Renowned for their durability and efficiency, the CE Series combines advanced technology with user-friendly features to appeal to both professional audio engineers and casual users.

One of the standout characteristics of the CE Series is its robust construction. Built to withstand the rigors of live events and handling, these amplifiers are housed in a rugged chassis that ensures long-term durability. The fan cooling system is designed for efficient thermal management, keeping the amplifier cool even during extended use, which is crucial for maintaining optimal performance.

The CE Series boasts a range of power options, making it versatile for different setups. With models delivering from 1500W to over 4000W per channel, users can choose the appropriate amplifier to match their specific requirements. This flexibility allows the CE Series to support a wide array of speakers and systems, whether for small venues or large-scale arenas.

Crown utilizes innovative technologies in the CE Series amplifiers. One of the key features is the DSP (Digital Signal Processing), which enhances sound quality and allows for precise control over the audio output. The onboard DSP includes presets for various speaker configurations, EQ settings, and time alignment features, facilitating quick adjustments to achieve the desired sound quality.

Another notable feature is the built-in limiters, which protect both the amplifier and speakers from damage due to overload or clipping. This protection ensures reliability during high-pressure situations, such as concerts or events where audio levels can fluctuate dramatically.

Connectivity options in the CE Series are also comprehensive. The amplifiers come equipped with both analog and digital inputs, allowing compatibility with a wide range of audio sources. Additionally, the rear panel includes speakON® outputs for quick and secure speaker connections.

With its combination of power, reliability, and advanced technology, Crown Audio’s CE Series amplifiers stand out in the crowded field of professional audio equipment. These features make the CE Series an excellent choice for audio professionals seeking quality performance across various applications. Whether for a permanent installation or a touring setup, the CE Series amplifiers deliver the sound, durability, and versatility required by today’s audio engineers.
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